Time: Yom Kippur, Shemini Atzeret, last day of Passover, second day of Shavuot. [In communities that observe only one day of Shavuot, Yizkor is said on that day. In many communities, Yizkor is also said on Rosh Hashanah, the second day of Sukkot and the second day of Passover.]

Major Practices: Recite special memorial services in the synagogue, light memorial candle (although some.light a candle only on Yom Kippur), give tzedakah.